*{
    margin: 0;
    padding:0;
}
body,html{
    width: 100%;
    height: 100%;
}
.wrapper{
    position: relative;
    left: 50%;
    top: 50%;
    margin-left: -25rem;
    margin-top:-25rem;
    width: 50rem;
    height: 50rem;
    border: 1px solid #ccc;
}
.person{
    position: absolute;
    left: 0;
    /* top: 50%; */
    bottom: 0;
    border-radius: 50%;
    background: #e4393c;
}
.ai{
    position: absolute;
    border-radius: 50%;
    background: #0dbb95;
}

@media screen and (max-width:800px){
    body{background:red;}
    .wrapper{
        position: relative;
        left: 0;
        top: 0;
        margin-left: 0;
        margin-top:0;
        width: 100%;
        height: 100%;
        border:0;
    }
}